What is Formula Mass?
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ᴛʜᴇ ғᴏʀᴍᴜʟᴀ ᴍᴀss ᴏғ ᴀ ᴍᴏʟᴇᴄᴜʟᴇ ɪs ᴛʜᴇ sᴜᴍ ᴏғ ᴛʜᴇ ᴀᴛᴏᴍɪᴄ ᴡᴇɪɢʜᴛs ᴏғ ᴛʜᴇ ᴀᴛᴏᴍs ɪɴ ᴛʜᴇ ᴇᴍᴘɪʀɪᴄᴀʟ ғᴏʀᴍᴜʟᴀ ᴏғ ᴛʜᴇ ᴄᴏᴍᴘᴏᴜɴᴅ. ᴛʜᴇ ғᴏʀᴍᴜʟᴀ ᴡᴇɪɢʜᴛ) ɪs ᴛʜᴇ sᴜᴍ ᴏғ ᴛʜᴇ ᴀᴛᴏᴍɪᴄ ᴡᴇɪɢʜᴛs ᴏғ ᴛʜᴇ ᴀᴛᴏᴍs ɪɴ ᴛʜᴇ ᴇᴍᴘɪʀɪᴄᴀʟ ғᴏʀᴍᴜʟᴀ ᴏғ ᴛʜᴇ ᴄᴏᴍᴘᴏᴜɴᴅ ғᴏʀᴍᴜʟᴀ.
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Answer:
To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons. Example: Find the atomic mass of an isotope of carbon that has 7 neutrons
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